Synway SMG4004-4LC Carry 2G GSM / 2.5G CDMA / 3G WCDMA / 4G LTE wave with 3rd software to connect.SIM plug SMG4004-4LC naturally routes outbound phone numbers according to the carrier and Gateway Sim Synway automatic re-routing the call. abetment API connects to write software to send and receive messages directly. Connecting IP PBX: Asterisk, Panasonic, Siemens, Grandstream, 3CX, Yeastar, Gateway Sim Synway mechanical re-routing the call.
High Voice Optimization Capability
High Flexibility and Scalability
High Interoperability with Terminals
Complete Protocols Range